EP 2581810 A1 20130417 - Light redirection in optical navigation
Title (en)
Light redirection in optical navigation
Title (de)
Lichtumleitung in optischer Navigation
Title (fr)
Redirection de la lumière dans une navigation optique
Publication
Application
Priority
EP 11185323 A 20111014
Abstract (en)
An optical navigation device (100), such as an optical navigation joystick or mouse, includes an internal redirector (452, 654, 756, 1058, 1164) which may be separate or formed from material of a touch surface (216) of the optical device. The redirector (452, 654, 756, 1058, 1164) is disposed at an angle with respect to a plane of the touch surface (216), operative to reflect light which would otherwise strike the touch surface (216) at a low angle and be internally reflected. The light may be reflected in a direction away a light sensor (214) of the device, reducing sensed internally reflected light, or may be reflected into the touch surface (216) at a higher angle, potentially increasing a quantity of good signal. The redirector (452, 654, 756, 1058, 1164) may also include portions which block light directly emitted from a light emitter (212), or reflected off other surfaces of the navigation device.
IPC 8 full level
G06F 3/03 (2006.01)
CPC (source: EP)
G06F 3/03547 (2013.01); G06F 3/0425 (2013.01)
Citation (search report)
- [XYI] WO 2004059613 A1 20040715 - ITAC SYSTEMS INC [US], et al
- [Y] US 2006131487 A1 20060622 - MATHIS OLIVIER [CH], et al
- [A] US 2007200826 A1 20070830 - ZENG YU-WEN [TW], et al
- [A] US 2003021284 A1 20030130 - IWASAKI JUNICHI [JP], et al
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 2581810 A1 20130417; EP 2581810 A9 20140402; CA 2792281 A1 20130414; CA 2792281 C 20151124
DOCDB simple family (application)
EP 11185323 A 20111014; CA 2792281 A 20121012